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Finding the Fourth Proportional to 18,866.72, 28,293.40 and 5,536

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Solution

The fourth proportional to 18,866.72, 28,293.40 and 5,536 is: 8,302.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866.72 : 28,293.40 = 5,536 : x
  2. Step 2: Convert to fraction form
    18,866.72/28,293.40 = 5,536/x
  3. Step 3: Cross multiply
    18,866.72x = 28,293.40 × 5,536
  4. Step 4: Simplify right side
    18,866.72x = 156,632,262.40
  5. Step 5: Solve for x
    x = 156,632,262.40/18,866.72
  6. Step 6: Final answer
    x = 8,302.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.